1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Sean Eric Fagan of Cygnus Support. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include "namespace.h" 36 #include <sys/param.h> 37 #include <sys/time.h> 38 #include <sys/sysctl.h> 39 #include <sys/resource.h> 40 #include <sys/socket.h> 41 42 #include <elf.h> 43 #include <errno.h> 44 #include <limits.h> 45 #include <paths.h> 46 #include <pthread.h> /* we just need the limits */ 47 #include <semaphore.h> 48 #include <time.h> 49 #include <unistd.h> 50 #include "un-namespace.h" 51 52 #include "../stdlib/atexit.h" 53 #include "tzdir.h" /* from ../../../contrib/tzcode/stdtime */ 54 #include "libc_private.h" 55 56 #define _PATH_ZONEINFO TZDIR /* from tzfile.h */ 57 58 /* 59 * sysconf -- 60 * get configurable system variables. 61 * 62 * XXX 63 * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values 64 * not change during the lifetime of the calling process. This would seem 65 * to require that any change to system limits kill all running processes. 66 * A workaround might be to cache the values when they are first retrieved 67 * and then simply return the cached value on subsequent calls. This is 68 * less useful than returning up-to-date values, however. 69 */ 70 long 71 sysconf(int name) 72 { 73 struct rlimit rl; 74 size_t len; 75 int mib[2], sverrno, value; 76 long lvalue, defaultresult; 77 const char *path; 78 79 defaultresult = -1; 80 81 switch (name) { 82 case _SC_ARG_MAX: 83 mib[0] = CTL_KERN; 84 mib[1] = KERN_ARGMAX; 85 break; 86 case _SC_CHILD_MAX: 87 if (getrlimit(RLIMIT_NPROC, &rl) != 0) 88 return (-1); 89 if (rl.rlim_cur == RLIM_INFINITY) 90 return (-1); 91 if (rl.rlim_cur > LONG_MAX) { 92 errno = EOVERFLOW; 93 return (-1); 94 } 95 return ((long)rl.rlim_cur); 96 case _SC_CLK_TCK: 97 return (CLK_TCK); 98 case _SC_NGROUPS_MAX: 99 mib[0] = CTL_KERN; 100 mib[1] = KERN_NGROUPS; 101 break; 102 case _SC_OPEN_MAX: 103 if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 104 return (-1); 105 if (rl.rlim_cur == RLIM_INFINITY) 106 return (-1); 107 if (rl.rlim_cur > LONG_MAX) { 108 errno = EOVERFLOW; 109 return (-1); 110 } 111 return ((long)rl.rlim_cur); 112 case _SC_STREAM_MAX: 113 if (getrlimit(RLIMIT_NOFILE, &rl) != 0) 114 return (-1); 115 if (rl.rlim_cur == RLIM_INFINITY) 116 return (-1); 117 if (rl.rlim_cur > LONG_MAX) { 118 errno = EOVERFLOW; 119 return (-1); 120 } 121 /* 122 * struct __sFILE currently has a limitation that 123 * file descriptors must fit in a signed short. 124 * This doesn't precisely capture the letter of POSIX 125 * but approximates the spirit. 126 */ 127 if (rl.rlim_cur > SHRT_MAX) 128 return (SHRT_MAX); 129 130 return ((long)rl.rlim_cur); 131 case _SC_JOB_CONTROL: 132 return (_POSIX_JOB_CONTROL); 133 case _SC_SAVED_IDS: 134 /* XXX - must be 1 */ 135 mib[0] = CTL_KERN; 136 mib[1] = KERN_SAVED_IDS; 137 goto yesno; 138 case _SC_VERSION: 139 mib[0] = CTL_KERN; 140 mib[1] = KERN_POSIX1; 141 break; 142 case _SC_BC_BASE_MAX: 143 return (BC_BASE_MAX); 144 case _SC_BC_DIM_MAX: 145 return (BC_DIM_MAX); 146 case _SC_BC_SCALE_MAX: 147 return (BC_SCALE_MAX); 148 case _SC_BC_STRING_MAX: 149 return (BC_STRING_MAX); 150 case _SC_COLL_WEIGHTS_MAX: 151 return (COLL_WEIGHTS_MAX); 152 case _SC_EXPR_NEST_MAX: 153 return (EXPR_NEST_MAX); 154 case _SC_LINE_MAX: 155 return (LINE_MAX); 156 case _SC_RE_DUP_MAX: 157 return (RE_DUP_MAX); 158 case _SC_2_VERSION: 159 /* 160 * This is something of a lie, but it would be silly at 161 * this point to try to deduce this from the contents 162 * of the filesystem. 163 */ 164 return (_POSIX2_VERSION); 165 case _SC_2_C_BIND: 166 return (_POSIX2_C_BIND); 167 case _SC_2_C_DEV: 168 return (_POSIX2_C_DEV); 169 case _SC_2_CHAR_TERM: 170 return (_POSIX2_CHAR_TERM); 171 case _SC_2_FORT_DEV: 172 return (_POSIX2_FORT_DEV); 173 case _SC_2_FORT_RUN: 174 return (_POSIX2_FORT_RUN); 175 case _SC_2_LOCALEDEF: 176 return (_POSIX2_LOCALEDEF); 177 case _SC_2_SW_DEV: 178 return (_POSIX2_SW_DEV); 179 case _SC_2_UPE: 180 return (_POSIX2_UPE); 181 case _SC_TZNAME_MAX: 182 path = _PATH_ZONEINFO; 183 do_NAME_MAX: 184 sverrno = errno; 185 errno = 0; 186 lvalue = pathconf(path, _PC_NAME_MAX); 187 if (lvalue == -1 && errno != 0) 188 return (-1); 189 errno = sverrno; 190 return (lvalue); 191 192 case _SC_ASYNCHRONOUS_IO: 193 #if _POSIX_ASYNCHRONOUS_IO == 0 194 mib[0] = CTL_P1003_1B; 195 mib[1] = CTL_P1003_1B_ASYNCHRONOUS_IO; 196 break; 197 #else 198 return (_POSIX_ASYNCHRONOUS_IO); 199 #endif 200 case _SC_MAPPED_FILES: 201 return (_POSIX_MAPPED_FILES); 202 case _SC_MEMLOCK: 203 return (_POSIX_MEMLOCK); 204 case _SC_MEMLOCK_RANGE: 205 return (_POSIX_MEMLOCK_RANGE); 206 case _SC_MEMORY_PROTECTION: 207 return (_POSIX_MEMORY_PROTECTION); 208 case _SC_MESSAGE_PASSING: 209 #if _POSIX_MESSAGE_PASSING == 0 210 mib[0] = CTL_P1003_1B; 211 mib[1] = CTL_P1003_1B_MESSAGE_PASSING; 212 goto yesno; 213 #else 214 return (_POSIX_MESSAGE_PASSING); 215 #endif 216 case _SC_PRIORITIZED_IO: 217 #if _POSIX_PRIORITIZED_IO == 0 218 mib[0] = CTL_P1003_1B; 219 mib[1] = CTL_P1003_1B_PRIORITIZED_IO; 220 goto yesno; 221 #else 222 return (_POSIX_PRIORITIZED_IO); 223 #endif 224 case _SC_PRIORITY_SCHEDULING: 225 #if _POSIX_PRIORITY_SCHEDULING == 0 226 mib[0] = CTL_P1003_1B; 227 mib[1] = CTL_P1003_1B_PRIORITY_SCHEDULING; 228 goto yesno; 229 #else 230 return (_POSIX_PRIORITY_SCHEDULING); 231 #endif 232 case _SC_REALTIME_SIGNALS: 233 #if _POSIX_REALTIME_SIGNALS == 0 234 mib[0] = CTL_P1003_1B; 235 mib[1] = CTL_P1003_1B_REALTIME_SIGNALS; 236 goto yesno; 237 #else 238 return (_POSIX_REALTIME_SIGNALS); 239 #endif 240 case _SC_SEMAPHORES: 241 #if _POSIX_SEMAPHORES == 0 242 mib[0] = CTL_P1003_1B; 243 mib[1] = CTL_P1003_1B_SEMAPHORES; 244 goto yesno; 245 #else 246 return (_POSIX_SEMAPHORES); 247 #endif 248 case _SC_FSYNC: 249 return (_POSIX_FSYNC); 250 251 case _SC_SHARED_MEMORY_OBJECTS: 252 return (_POSIX_SHARED_MEMORY_OBJECTS); 253 case _SC_SYNCHRONIZED_IO: 254 #if _POSIX_SYNCHRONIZED_IO == 0 255 mib[0] = CTL_P1003_1B; 256 mib[1] = CTL_P1003_1B_SYNCHRONIZED_IO; 257 goto yesno; 258 #else 259 return (_POSIX_SYNCHRONIZED_IO); 260 #endif 261 case _SC_TIMERS: 262 #if _POSIX_TIMERS == 0 263 mib[0] = CTL_P1003_1B; 264 mib[1] = CTL_P1003_1B_TIMERS; 265 goto yesno; 266 #else 267 return (_POSIX_TIMERS); 268 #endif 269 case _SC_AIO_LISTIO_MAX: 270 mib[0] = CTL_P1003_1B; 271 mib[1] = CTL_P1003_1B_AIO_LISTIO_MAX; 272 break; 273 case _SC_AIO_MAX: 274 mib[0] = CTL_P1003_1B; 275 mib[1] = CTL_P1003_1B_AIO_MAX; 276 break; 277 case _SC_AIO_PRIO_DELTA_MAX: 278 mib[0] = CTL_P1003_1B; 279 mib[1] = CTL_P1003_1B_AIO_PRIO_DELTA_MAX; 280 break; 281 case _SC_DELAYTIMER_MAX: 282 mib[0] = CTL_P1003_1B; 283 mib[1] = CTL_P1003_1B_DELAYTIMER_MAX; 284 goto yesno; 285 case _SC_MQ_OPEN_MAX: 286 mib[0] = CTL_P1003_1B; 287 mib[1] = CTL_P1003_1B_MQ_OPEN_MAX; 288 goto yesno; 289 case _SC_PAGESIZE: 290 return (getpagesize()); 291 case _SC_RTSIG_MAX: 292 mib[0] = CTL_P1003_1B; 293 mib[1] = CTL_P1003_1B_RTSIG_MAX; 294 goto yesno; 295 case _SC_SEM_NSEMS_MAX: 296 return (-1); 297 case _SC_SEM_VALUE_MAX: 298 return (SEM_VALUE_MAX); 299 case _SC_SIGQUEUE_MAX: 300 mib[0] = CTL_P1003_1B; 301 mib[1] = CTL_P1003_1B_SIGQUEUE_MAX; 302 goto yesno; 303 case _SC_TIMER_MAX: 304 mib[0] = CTL_P1003_1B; 305 mib[1] = CTL_P1003_1B_TIMER_MAX; 306 yesno: 307 len = sizeof(value); 308 if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 309 return (-1); 310 if (value == 0) 311 return (defaultresult); 312 return ((long)value); 313 314 case _SC_2_PBS: 315 case _SC_2_PBS_ACCOUNTING: 316 case _SC_2_PBS_CHECKPOINT: 317 case _SC_2_PBS_LOCATE: 318 case _SC_2_PBS_MESSAGE: 319 case _SC_2_PBS_TRACK: 320 #if _POSIX2_PBS == 0 321 #error "don't know how to determine _SC_2_PBS" 322 /* 323 * This probably requires digging through the filesystem 324 * to see if the appropriate package has been installed. 325 * Since we don't currently support this option at all, 326 * it's not worth the effort to write the code now. 327 * Figuring out which of the sub-options are supported 328 * would be even more difficult, so it's probably easier 329 * to always say ``no''. 330 */ 331 #else 332 return (_POSIX2_PBS); 333 #endif 334 case _SC_ADVISORY_INFO: 335 #if _POSIX_ADVISORY_INFO == 0 336 #error "_POSIX_ADVISORY_INFO" 337 #else 338 return (_POSIX_ADVISORY_INFO); 339 #endif 340 case _SC_BARRIERS: 341 #if _POSIX_BARRIERS == 0 342 #error "_POSIX_BARRIERS" 343 #else 344 return (_POSIX_BARRIERS); 345 #endif 346 case _SC_CLOCK_SELECTION: 347 #if _POSIX_CLOCK_SELECTION == 0 348 #error "_POSIX_CLOCK_SELECTION" 349 #else 350 return (_POSIX_CLOCK_SELECTION); 351 #endif 352 case _SC_CPUTIME: 353 return (_POSIX_CPUTIME); 354 #ifdef notdef 355 case _SC_FILE_LOCKING: 356 /* 357 * XXX - The standard doesn't tell us how to define 358 * _POSIX_FILE_LOCKING, so we can't answer this one. 359 */ 360 #endif 361 362 /* 363 * SUSv4tc1 says the following about _SC_GETGR_R_SIZE_MAX and 364 * _SC_GETPW_R_SIZE_MAX: 365 * Note that sysconf(_SC_GETGR_R_SIZE_MAX) may return -1 if 366 * there is no hard limit on the size of the buffer needed to 367 * store all the groups returned. 368 */ 369 case _SC_GETGR_R_SIZE_MAX: 370 case _SC_GETPW_R_SIZE_MAX: 371 return (-1); 372 case _SC_HOST_NAME_MAX: 373 return (MAXHOSTNAMELEN - 1); /* does not include \0 */ 374 case _SC_LOGIN_NAME_MAX: 375 return (MAXLOGNAME); 376 case _SC_MONOTONIC_CLOCK: 377 #if _POSIX_MONOTONIC_CLOCK == 0 378 #error "_POSIX_MONOTONIC_CLOCK" 379 #else 380 return (_POSIX_MONOTONIC_CLOCK); 381 #endif 382 #if _POSIX_MESSAGE_PASSING > -1 383 case _SC_MQ_PRIO_MAX: 384 return (MQ_PRIO_MAX); 385 #endif 386 case _SC_READER_WRITER_LOCKS: 387 return (_POSIX_READER_WRITER_LOCKS); 388 case _SC_REGEXP: 389 return (_POSIX_REGEXP); 390 case _SC_SHELL: 391 return (_POSIX_SHELL); 392 case _SC_SPAWN: 393 return (_POSIX_SPAWN); 394 case _SC_SPIN_LOCKS: 395 return (_POSIX_SPIN_LOCKS); 396 case _SC_SPORADIC_SERVER: 397 #if _POSIX_SPORADIC_SERVER == 0 398 #error "_POSIX_SPORADIC_SERVER" 399 #else 400 return (_POSIX_SPORADIC_SERVER); 401 #endif 402 case _SC_THREAD_ATTR_STACKADDR: 403 return (_POSIX_THREAD_ATTR_STACKADDR); 404 case _SC_THREAD_ATTR_STACKSIZE: 405 return (_POSIX_THREAD_ATTR_STACKSIZE); 406 case _SC_THREAD_CPUTIME: 407 return (_POSIX_THREAD_CPUTIME); 408 case _SC_THREAD_DESTRUCTOR_ITERATIONS: 409 return (PTHREAD_DESTRUCTOR_ITERATIONS); 410 case _SC_THREAD_KEYS_MAX: 411 return (PTHREAD_KEYS_MAX); 412 case _SC_THREAD_PRIO_INHERIT: 413 return (_POSIX_THREAD_PRIO_INHERIT); 414 case _SC_THREAD_PRIO_PROTECT: 415 return (_POSIX_THREAD_PRIO_PROTECT); 416 case _SC_THREAD_PRIORITY_SCHEDULING: 417 return (_POSIX_THREAD_PRIORITY_SCHEDULING); 418 case _SC_THREAD_PROCESS_SHARED: 419 return (_POSIX_THREAD_PROCESS_SHARED); 420 case _SC_THREAD_SAFE_FUNCTIONS: 421 return (_POSIX_THREAD_SAFE_FUNCTIONS); 422 case _SC_THREAD_STACK_MIN: 423 return (PTHREAD_STACK_MIN); 424 case _SC_THREAD_THREADS_MAX: 425 return (PTHREAD_THREADS_MAX); /* XXX wrong type! */ 426 case _SC_TIMEOUTS: 427 return (_POSIX_TIMEOUTS); 428 case _SC_THREADS: 429 return (_POSIX_THREADS); 430 case _SC_TRACE: 431 #if _POSIX_TRACE == 0 432 #error "_POSIX_TRACE" 433 /* While you're implementing this, also do the ones below. */ 434 #else 435 return (_POSIX_TRACE); 436 #endif 437 #if _POSIX_TRACE > -1 438 case _SC_TRACE_EVENT_FILTER: 439 return (_POSIX_TRACE_EVENT_FILTER); 440 case _SC_TRACE_INHERIT: 441 return (_POSIX_TRACE_INHERIT); 442 case _SC_TRACE_LOG: 443 return (_POSIX_TRACE_LOG); 444 #endif 445 case _SC_TTY_NAME_MAX: 446 path = _PATH_DEV; 447 goto do_NAME_MAX; 448 case _SC_TYPED_MEMORY_OBJECTS: 449 #if _POSIX_TYPED_MEMORY_OBJECTS == 0 450 #error "_POSIX_TYPED_MEMORY_OBJECTS" 451 #else 452 return (_POSIX_TYPED_MEMORY_OBJECTS); 453 #endif 454 case _SC_V6_ILP32_OFF32: 455 #if _V6_ILP32_OFF32 == 0 456 if (sizeof(int) * CHAR_BIT == 32 && 457 sizeof(int) == sizeof(long) && 458 sizeof(long) == sizeof(void *) && 459 sizeof(void *) == sizeof(off_t)) 460 return 1; 461 else 462 return -1; 463 #else 464 return (_V6_ILP32_OFF32); 465 #endif 466 case _SC_V6_ILP32_OFFBIG: 467 #if _V6_ILP32_OFFBIG == 0 468 if (sizeof(int) * CHAR_BIT == 32 && 469 sizeof(int) == sizeof(long) && 470 sizeof(long) == sizeof(void *) && 471 sizeof(off_t) * CHAR_BIT >= 64) 472 return 1; 473 else 474 return -1; 475 #else 476 return (_V6_ILP32_OFFBIG); 477 #endif 478 case _SC_V6_LP64_OFF64: 479 #if _V6_LP64_OFF64 == 0 480 if (sizeof(int) * CHAR_BIT == 32 && 481 sizeof(long) * CHAR_BIT == 64 && 482 sizeof(long) == sizeof(void *) && 483 sizeof(void *) == sizeof(off_t)) 484 return 1; 485 else 486 return -1; 487 #else 488 return (_V6_LP64_OFF64); 489 #endif 490 case _SC_V6_LPBIG_OFFBIG: 491 #if _V6_LPBIG_OFFBIG == 0 492 if (sizeof(int) * CHAR_BIT >= 32 && 493 sizeof(long) * CHAR_BIT >= 64 && 494 sizeof(void *) * CHAR_BIT >= 64 && 495 sizeof(off_t) * CHAR_BIT >= 64) 496 return 1; 497 else 498 return -1; 499 #else 500 return (_V6_LPBIG_OFFBIG); 501 #endif 502 case _SC_ATEXIT_MAX: 503 return (ATEXIT_SIZE); 504 case _SC_IOV_MAX: 505 mib[0] = CTL_KERN; 506 mib[1] = KERN_IOV_MAX; 507 break; 508 case _SC_XOPEN_CRYPT: 509 return (_XOPEN_CRYPT); 510 case _SC_XOPEN_ENH_I18N: 511 return (_XOPEN_ENH_I18N); 512 case _SC_XOPEN_LEGACY: 513 return (_XOPEN_LEGACY); 514 case _SC_XOPEN_REALTIME: 515 #if _XOPEN_REALTIME == 0 516 sverrno = errno; 517 value = sysconf(_SC_ASYNCHRONOUS_IO) > 0 && 518 sysconf(_SC_MEMLOCK) > 0 && 519 sysconf(_SC_MEMLOCK_RANGE) > 0 && 520 sysconf(_SC_MESSAGE_PASSING) > 0 && 521 sysconf(_SC_PRIORITY_SCHEDULING) > 0 && 522 sysconf(_SC_REALTIME_SIGNALS) > 0 && 523 sysconf(_SC_SEMAPHORES) > 0 && 524 sysconf(_SC_SHARED_MEMORY_OBJECTS) > 0 && 525 sysconf(_SC_SYNCHRONIZED_IO) > 0 && 526 sysconf(_SC_TIMERS) > 0; 527 errno = sverrno; 528 if (value) 529 return (200112L); 530 else 531 return (-1); 532 #else 533 return (_XOPEN_REALTIME); 534 #endif 535 case _SC_XOPEN_REALTIME_THREADS: 536 #if _XOPEN_REALTIME_THREADS == 0 537 #error "_XOPEN_REALTIME_THREADS" 538 #else 539 return (_XOPEN_REALTIME_THREADS); 540 #endif 541 case _SC_XOPEN_SHM: 542 len = sizeof(lvalue); 543 sverrno = errno; 544 if (sysctlbyname("kern.ipc.shmmin", &lvalue, &len, NULL, 545 0) == -1) { 546 errno = sverrno; 547 return (-1); 548 } 549 errno = sverrno; 550 return (1); 551 case _SC_XOPEN_STREAMS: 552 return (_XOPEN_STREAMS); 553 case _SC_XOPEN_UNIX: 554 return (_XOPEN_UNIX); 555 #ifdef _XOPEN_VERSION 556 case _SC_XOPEN_VERSION: 557 return (_XOPEN_VERSION); 558 #endif 559 #ifdef _XOPEN_XCU_VERSION 560 case _SC_XOPEN_XCU_VERSION: 561 return (_XOPEN_XCU_VERSION); 562 #endif 563 case _SC_SYMLOOP_MAX: 564 return (MAXSYMLINKS); 565 case _SC_RAW_SOCKETS: 566 return (_POSIX_RAW_SOCKETS); 567 case _SC_IPV6: 568 #if _POSIX_IPV6 == 0 569 sverrno = errno; 570 value = _socket(PF_INET6, SOCK_DGRAM, 0); 571 errno = sverrno; 572 if (value >= 0) { 573 _close(value); 574 return (200112L); 575 } else 576 return (0); 577 #else 578 return (_POSIX_IPV6); 579 #endif 580 581 case _SC_NPROCESSORS_CONF: 582 case _SC_NPROCESSORS_ONLN: 583 if (_elf_aux_info(AT_NCPUS, &value, sizeof(value)) == 0) 584 return ((long)value); 585 mib[0] = CTL_HW; 586 mib[1] = HW_NCPU; 587 break; 588 589 #ifdef _SC_PHYS_PAGES 590 case _SC_PHYS_PAGES: 591 len = sizeof(lvalue); 592 if (sysctlbyname("hw.availpages", &lvalue, &len, NULL, 0) == -1) 593 return (-1); 594 return (lvalue); 595 #endif 596 597 #ifdef _SC_CPUSET_SIZE 598 case _SC_CPUSET_SIZE: 599 len = sizeof(value); 600 if (sysctlbyname("kern.sched.cpusetsize", &value, &len, NULL, 601 0) == -1) 602 return (-1); 603 return ((long)value); 604 #endif 605 606 default: 607 errno = EINVAL; 608 return (-1); 609 } 610 len = sizeof(value); 611 if (sysctl(mib, 2, &value, &len, NULL, 0) == -1) 612 value = -1; 613 return ((long)value); 614 } 615